Analog Devices Inc. ADG5462FBRUZ

Overview

ADG5462FBRUZ from Analog Devices is a quad-channel, user-configurable overvoltage-protected analog switch designed for series signal-path fault protection in industrial and test instrumentation systems. It delivers 10 Ω typical on-resistance, ±55 V fault blocking (powered/unpowered), and integrated overvoltage detection with interrupt flag (FF) output. Its trench-isolated architecture ensures latch-up immunity while supporting ±5 V to ±22 V dual supply or 8 V to 44 V single-supply operation.

For engineers reviewing the ADG5462FBRUZ datasheet, ADG5462FBRUZ pinout, ADG5462FBRUZ application, or ADG5462FBRUZ equivalent, key selection criteria include fault voltage programmability via POSFV/NEGFV pins, sub-1 µs overvoltage response time, low THD+N (0.001% typ), and compatibility with high-voltage data acquisition front-ends requiring robust power-off protection.

Technical Context

The ADG5462FBRUZ implements a four-channel, source-series protection architecture where each Sx pin is individually monitored against user-defined positive (POSFV) and negative (NEGFV) fault thresholds. Threshold voltage VT is fixed at 0.7 V typical, enabling precise overvoltage detection independent of supply rail variations.

During fault events, the channel turns off and isolates the Sx pin (high-impedance), while DR pin control determines whether Dx is pulled to POSFV or NEGFV. Fault status is reported via open-drain FF output with weak internal pull-up, supporting wired-OR interrupt aggregation across multi-channel modules.

Key Specifications

Pinout & Package

The ADG5462FBRUZ is available in a 16-lead TSSOP package (RUZ suffix) with exposed pad. Pin functions are electrically identical between TSSOP and LFCSP variants, differing only in mechanical layout and thermal performance (θJA = 112.6°C/W for TSSOP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar overvoltage-protected analog switch applications.

Compared with ADG5462BRUZ and MAX14662ETE+, the ADG5462FBRUZ uniquely combines user-programmable fault thresholds, DR-controllable drain behavior, and integrated FF interrupt - making it the only option for systems requiring coordinated, intelligent, and configurable overvoltage response without external supervision logic.

Availability

ADG5462FBRUZ is available at Aetrix Electronics and suitable for analog input modules, automatic test equipment, and avionics signal conditioning requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for ADG5462FBRUZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and aerospace markets since 1965.

The ADG5462FBRUZ belongs to Analog Devices' fault-protected analog switch product line, engineered specifically for high-reliability signal path protection in harsh environments where power sequencing is uncontrolled and transient threats exceed standard IC ratings.

FAQ

What is the maximum continuous current per channel for ADG5462FBRUZ?

The ADG5462FBRUZ supports up to 83 mA continuous current per channel at 25°C in the 16-lead TSSOP package when the signal is within 4.5 V of the supply rails. At +85°C, this derates to 59 mA, and at +125°C to 39 mA. Derating follows thermal resistance θJA = 112.6°C/W, and absolute maximum peak current is 288 mA (1 ms, 10% duty cycle). These values are confirmed in Table 5 of the ADG5462F Rev. C datasheet.

Can ADG5462FBRUZ operate with only a single supply?

Yes, the ADG5462FBRUZ supports single-supply operation from 8 V to 44 V (e.g., VDD = 12 V, VSS = 0 V). In this configuration, the analog signal range is 0 V to VDD, and fault protection remains active from −55 V to +55 V on Sx pins. POSFV and NEGFV must be set accordingly - for example, POSFV = VDD and NEGFV = 0 V - to define the protection window. This mode is fully characterized in Table 3 (12 V) and Table 4 (36 V) of the datasheet.

How does the DR pin affect fault behavior in ADG5462FBRUZ?

The DR pin controls drain terminal behavior during overvoltage faults. When DR is driven low, Dx is actively pulled to either POSFV or NEGFV depending on which fault threshold was exceeded. When DR is floating or tied to VDD, Dx remains in high-impedance state during fault. This selective clamping prevents unintended loading of downstream circuitry and enables flexible fault-handling strategies - a capability absent in non-F variants like ADG5462BRUZ.

Is ADG5462FBRUZ latch-up immune?

Yes, the ADG5462FBRUZ uses trench isolation technology that guarantees latch-up immunity under all conditions - including overvoltage, reverse bias, rapid supply transients, and extreme temperature cycling. This is explicitly stated in the Product Highlights and General Description sections of the Rev. C datasheet and verified per JEDEC JESD78 Class II requirements.

What is the function of the FF pin in ADG5462FBRUZ?

The FF (Fault Flag) pin is an open-drain digital output that goes low whenever an overvoltage condition is detected on any Sx pin. It features a weak internal pull-up, allowing multiple ADG5462FBRUZ devices to share a single interrupt line via wired-OR connection. The FF pin transitions low within 85 ns (typical) of fault onset and recovers within 60 µs (typical) after fault clearance - enabling real-time system-level fault monitoring without external logic.